Uh I don't think so. They already have Ctrl+S (see the full list by typing "?"), which anywhere in a web browser window would bring up the browser's save page dialog. so they certainly CAN add any Ctrl + shortcut that they want. So back to my question, I wonder if they already do allow it and there's a way to short-hand specify the Ctrl key. Anyone know??? your idea sounds interesting but 1. i don't think you can have key1 + key2, just key1 THEN key2 - not the same and annoying to teach urself. plus the whole idea of shortcuts is to use the SAME ones system-wide, in ALL programs. if possible.
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foregonAug 13 '12 at 20:15

They may be able to do it, but you can't do it with the custom keyboard shortcuts. At least not as they're currently implemented.
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Al E.Aug 13 '12 at 20:19